package com.hmdp.interceptor;

import com.hmdp.utils.UserHolder;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//        // 1.判断是否需要拦截（ThreadLocal中是否有用户）
//        if (UserHolder.getUser() == null) {
//            // 没有，需要拦截，设置状态码
//            response.setStatus(401);
//            // 拦截
//            return false;
//        }

//        HttpSession session = request.getSession();
//        Object user = session.getAttribute("user");

//        if (user == null) {
//            response.setStatus(401);
//            return false;
//        }
        //        UserHolder.saveUser((UserDTO) user);

                if (UserHolder.getUser()==null){
            response.setStatus(401);
            return false;
        }


        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // 移除用户
        UserHolder.removeUser();
    }

}
